Mutable Instruments Streams Dual Dynamic Gate

The Mutable Instruments Streams Dual Dynamics Gate Eurorack Module provides two channels of extremely flexible signal dynamics manipulation.

Each channel consists of an analogue voltage-controlled filter and amplifier (VCFA). The response curve of the amplifier section is continuously variable from exponential to linear. The amplifier gain is directly controllable from a CV input, through an attenuator. But what makes Streams truly unique is the multi-purpose EXCITE input. The signal routed to this input is analyzed by a micro-controller and translated into internal control voltages for the VCFA, turning Streams into a very versatile signal contouring tool.

The ‘excite’ input can work as a trigger input, triggering an internal AD or AR envelope routed to the gain and the filter cutoff (in variable amount). With only 6-HP of space, you can shape an oscillator or noise source into a full-bodied sound.

The envelope and cutoff of the ‘excite’ signal is measured, and applied to the signal on the VCFA input.

Streams’ VCF is disabled, and the VCA is used to control the dynamics of the input signal. An intuitive control scheme allows the compressor to be used either for peak reduction/limiting operation; or for boosting signal levels with soft-limiting. The ‘excite’ input can be used as a sidechain.

The main features of the Mutable Instruments Streams Dual Dynamics Gate Eurorack Module include:

• AD or AR envelope generator.
• Vactrol response generator – gated or pinged/struck.
• Amplitude and cutoff follower.
• Compressor.
• Multi-purpose EXCITE input.
• DC-coupled Audio/CV input (normalized to +5V constant voltage).
• VCA gain CV (normalized to +8V constant voltage).
• Output.
• Digital control mode selection.
• Response time / compression threshold.
• Modulation amount / compression ratio and makeup gain.
• VCA gain CV input attenuator.
• VCA exponential to linear response curve.
• Analog signal path.
• All inputs DC-coupled.
• 12-bit, 31kHz EXCITE signal acquisition (for metering and following).
• 16-bit, 31kHz control voltage generation.
• Cortex-M3 ARM processor.
• Open-source hardware and firmware.
• 12-HP.
• Easy firmware updates through an audio interface.
• Current consumption: +12V: 100mA ; -12V: 30mA.